Wholesale 1-40 Layers Printed Circuit Board Customized PCB for Controller/Electronic Calculator

Wholesale 1-40 layers Printed Circuit Board Customized PCB for Controller/Electronic Calculator  Technical & CapabilityItemProduction CapacityLayer Counts1-20 layersMaterialFR-4,Cu base,High TG FR-4,PTFE,Rogers,TEFLON etc.Board thickness0.20mm-8.00mmMaximum Size600mmX1200mmBoard Outline Tolerance +0.10mmThickness Tolerance(t≥0.8mm)±8%Thickness Tolerance(t